Analog Spindle Drive Voltage Problem

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28 Apr 2016 01:45 #73977 by Sousanator
Hey gents, I'm doing a retrofit of a 93' Cincinnati Lancer 3 axis mill using a mesa 5i25/7i77 combo. It uses Fanuc analog servo drives.

I've managed to get all 3 axes working as well as the spindle, but when I use PNCconf to test the spindle the drive voltage on AOUT5 does not change.

The odd thing is that if I plug in the spindle interface to a port configured as an axis the drive voltage works perfectly. If I then change the config to spindle, AOUTx no longer works. This leads me to believe that this is a software issue. Do you think I have a setting wrong somewhere?

Let me know if you need anything else! Any help would be much appreciated!

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28 Apr 2016 09:50 #73995 by andypugh
This sounds like a quirk of Pncconf. Does the spindle work with the generated machine configuration?
I would suggest just carrying on and ignoring the spindle test part of pncconf. You can always debug things later if the final config also doesn't work.

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28 Apr 2016 22:34 #74028 by Sousanator
No the generated file does not work.

Basically what happens is the output voltage is always 0 if the axis is configured as a spindle. There just has to some setting somewhere.. maybe missing a hal pin?

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28 Apr 2016 22:49 #74029 by andypugh
Post the HAL file, we can probably spot the problem.

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28 Apr 2016 22:58 - 28 Apr 2016 22:58 #74030 by PCW
Yes post the hal file, it should be easy to fix.
What version of LinuxCNC are you running?
There was a bug in the spindle hal wiring ( a net name mismatch) but I thought it was fixed 2.7.4
Last edit: 28 Apr 2016 22:58 by PCW.

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